$ git clone -n https://src.fedoraproject.org/rpms/bless.git /var/lib/mock/f40-build-2250818-54084/root/chroot_tmpdir/scmroot/bless
Cloning into '/var/lib/mock/f40-build-2250818-54084/root/chroot_tmpdir/scmroot/bless'...
$ git fetch origin f5cc3ab46707882de5cb94518d0ef1bd45b4351b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bless
 * [new ref]         f5cc3ab46707882de5cb94518d0ef1bd45b4351b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5cc3ab Add appstream data